Ghost-borders ('ringing') when resizing in GDI+

Question

What happens (only noticeable on certain images) is I will see a 1 pixel white border that is inset one pixel. It seems to happen in areas that are light but not white (e.g.

Answer 1

Try:

g.CompositingMode = CompositingMode.SourceCopy;

From my answer here, corrected for syntax.

The resizing is creating partial transparency around the border. Setting SourceCopy tells it to replace that partially transparent pixel with a fully opaque one.